Paper-reinforcing machine



K. WANDEL.

PAPER REINFORCING MACHINE.

APPLICATION HLED FEB. 15. 1919.

1,368,588. Patented Feb. 15,1921.

7SHEETSSHEET I.

K. WANDEL.

PAPER REINFORCING MACHINE.

APPLICATION FILED FEB. 15, m9.

Patented Feb. 15, 1921.

7 SHEETS-SHEET 2.

K. WANDEL.

PAPER REINFORCING MACHINE.

APPLICATION FILED FEB. 15, 1919.

1,368,588. Patented Feb. 15,1921.

7SHEETS-SHEET 3- K. WANDEL. PAPER REINFORClNG MACHINE. APPUCATION FILED FEB. I5. 1919.

7 SHEETS-SHEET 4- Patented Feb. 15,1921.

K. WANDEL.

PAPER REINFORCING MACHINE.

APPLICATION FILED FEB. 15, 1919.

Patented Feb. 15,1921.

7 SHEETSSHEET 5- K. WANDEL.

PAPER REIVNFORCING MACHINE.

APPLICATION FILED FEB. 15. 1-919.

1,368,588. Patented Feb. 15,1921.

7SHEETSSHEET 6.

K. WANDEL. PAPER REINFORCING MACHINE.

APPLICATION FILED FEB. I5, I9I9 Mo e UNITED STATES KURT WANDEL, OF NEW YORK, N. Y.

PAPER-REINFORCING MACHINE.

Application filed February 15, 1919.

T 0 alien/10m itmag con/1cm:

Be it known that I, KURT WANDEL, a citizen of /l urttemberg, who have declared my intention of becoming a citizen of the United States, and resident of New York city, county of New York; State of New York, have invented an Improvement in Paper-Reinforcing l\'lacl1ines,.of which the following description, in connection with the accompanying drawings is a specification, like characters on the drawings representing like parts in each of the several views.

This invention relates to apparatus for applying reinforcing filaments or threads to webs of paper or like sheet material and more particularly to special. mechanism for applying continuously transverse filaments to a paper sheet as it is fed continuously through the machine. The invention is well adapted for applying reinforcing filaments between two sheets of paper that are to be joined together with a pitch or other cementitious binder to'form a duplex paper, A principal object of the invention is to provide a cross thread laying means that is continuously operative in synchronism with the paper movement and adapted to lay the threads under tension upon the coated paper just at the instant it is pressed against and united with the other paper sheet. To this end I provide thread tensioning and laying for holding the cross threads that are operative in close proximity to a pair of pressure rollers that press the two sheets of paper together. A further object of the invention is to provide means readily and conveniently adjustable for laying the cross threads at different distances apart as may be required for different uses. A still further object is to provide thread laying mechanism of the kind stated that is readily adaptable and adjustable to different widths of paper. A further object is to provide thread laying instrumentalities that are simple and of few parts, yet capable of operatingrapidly and reliably to lay reinforcing threads in the manufacture of duplex paper. The foregoing and other objects and advantages of the invention will more fully appear from the following detailed description, and the distinctive features of novelty will be pointed out in the appended claims.

Referring to the drawings:

Figure 1 is a plan view showing the essential parts of an apparatus constructed in ac- Specification of Letters Patent.

Patented Feb. 15, 1921 Serial No. 277,287.

cor-dance with my invention, portions being broken away and in section;

Fig. 2 is a front view thereof with a por t1on 111 section;

Fig. 3 is an end view looking from the right in Fig. 1;

Fig. 4 is an enlarged-detail partly in elevation and partly in vertical section showing the mounting and operating means of the thread laying chains;

Fig. 5 is a partial perspective view shouing 'thecooperation of the thread laying in str-umentalities with the pressure rollers;

Fig. 6 is an enlarged fragmentary perspective illustrating the operation of the thread gripping jaws;

Fig. 7 is an enlarged detail in vertical section showing the mounting of the thread gripping jaws;

Fig. 8 is a detail partly in elevation and partly in vertical section showing a thread gripping jaw from the front;

Fig. 9 is a detail plan view of a thread gripping jaw;

Fig. 10 is a fragmentary side elevation illustrating a modified means for spacing and separating the cross threads Fig. 11 is'a diagrammatic plan view of the mechanism shown in Fig. 10; and

Fig. 12- is a fragmentary cross section illustrating the mechanism of Figs. 10 and 11.

Upon a suitable frame work 10 are journaled a pair of free moving pressure rollers 11, 12, the lower one 11 of these being journaled in stationary bearings and the upper one 12 in bearings at the ends of swinging arms 13 pivoted to the frame at 14. The arms 13 are engaged by links 15 connected with lever arms 16 pivoted to the frame at 1'7 and having mounted thereon adjustable weights 18 adapted thus to act on the roll 12 to press it against the roll 11 with a variable predetermined pressure. Between the presser rolls 11 and 12 are laid a paper web W from above and a second web W from below, these webs being previously treated with hot pitch or other binding or adhesive substance. A series of filaments F are led upward with the web WV, these being guided parallel spaced apart relations The duplexed paper is engaged afterits passage between the rolls 11, 12 by another pair of feeding rolls 21, 22 which are suitably driven, as indicated by a power belt 23; these rolls being mounted in suitable manner (not shown) so as to press the paper between them, are adapted to draw it constantly through the machine for the cotiperation of the cross thread laying instrumentalities now to be described. In spaced apart standards 24 of the frame work is journaled a drive shaft 25 equipped with means to receive driving impulse, shown as belt pulleys 26. This shaft has a gear 27 fixed on the inner end thereof engaging a gear 28 fixed on a spool carrier 29 rotatably j ournaled as seen at 30 on a head 30' of the machine frame. The carrier 29 is equipped with a seriesof spool holders 31 detachably fitted thereto each bearing a thread spool S from which a thread T is drawnby the thread laying mechanism to be described. The series of threads T are guided through passages in a guide ring32 mounted on the 2 carrier 29 and held spaced inward therefrom by holding rods 33. From the guide ring 32 the threads are laid through a series of guiding and tensioning passages 34 carried by a sprocket chain 35. i The chain 35 is mounted to operate at one side ofthe paper web and therewith, on an inner sprocket wheel 36 and an outer sprocket wheel 37. This sprocket chain is connected to rotate in unison with the spool carrier,

and for this purpose the sprocket wheel 37 has rigid therewith asmaller sprocket wheel 33driven by a sprocket chain 39 from a shaft 40 'journaled in the frame work. the outer end ofthis shaft being connected by gearing 41 with the drive shaft 25. v The several thread guiding passages 34 are each equipped with a tension'device 34*, which is adapted tohoid the thread passing therethrough under suitable tension which may be varied by adjusting the nut 34 of such tension device, a thread guiding wire loop 34 being provided to engage the thread just within said tension device to support the thread end out close to the gripping jaws as now to be explained. The sprocket wheels 37, 38 are fixed on a shortshaft 42 which is journaledin a bearing block 43 carried on a plate 44 adj ustably clamped to ways 45 for reasons later more fully set forth. The shaft 42 has fixed at the inner end thereof a beveled pinion 46 in driving engagement with I a pinion 47-rigid with a sprocket wheel 48 journaled on a post 49 carried by the plate 44. The sprocket wheel 48 has engaged therewith a sprocket chain 50, the links of which are equipped with upwardly and outwardly projecting lugs 51 to which are pivoted at 52 gripper. jaws 53 coeperative with gripper blocks 54 carried by the respective links to grip and clamp between them the end of a filament as it projects from the thread guide 34. Each gripper jaw is equipped with a rearwardly extending arm 55 acted on by a spring 55 tending to swing the same to close the jaw. A stationary curved rail 56 is mounted in position to act on the tail ends of the arms 55 as the jaws 53 7 come opposite to and adjacent the thread guides 34 on the sprocket wheel 37 and thus the jaws 53 are caused to open to receive the thread ends as best seen in Fig. 6. The rail 56 terminates just beyond this position as seen at 56 so that before the jaws 53 begin to recede from the sprocket chain 35 they are closed upon and clamping the thread ends to draw them through tension devices 34 of the guides 34. From the sprocket wheel 48 the sprocket chain 50 extends diagonally forward across the paper web, the inner reach of said chain being mounted on another sprocket wheel 57 pivoted at 58 to a plate 59 fitted for transverse adjustment on ways 60 of the machine frame. As best seen in Figs. 1 and 5 the sprocket wheel 57 is so positioned as to carry the gripper jaws on the chain 50 into close proximity with the receiving month between the rolls 11, 12 as said jaws move outward beyond the edge of the sheet and thus it results that the threads carried by said jaws and held under tension by the tension devices 34 will be laid on to the sheet in a taut condition just as they are caught between the two pressure rolls 11, 12. It will be understood that the jaws 53 are spaced on the be mounted to out off the threads close to the edge of the paper, before the ends are thus released by the jaws. It is also essential that means he provided for severing the threads at the other side of the paper, 6. 6., 7

just beyond the tension devices 34 and for this purposeI show in Fig. 1 a rotary power driven cutter 61 connected for operation by an electric motor 62. I preferably however useat both ends of the rolls severing devices of the kind shown in Figs. 10, 11 and 12 which are also constituted to serve as spacing and locating means for the threads. I As hereinshown the lower roll 11 has fixed to the end thereof at its periphery a ring 63 equipped with pointed curved teeth 64 extending from the circumference of the roll, these teeth being spaced apart a distance corresponding to the required spacing of the threads 1'. For cooperation with this ring I mount a stationary shear knife carried by a bracket 66 depending from the machine frame, this knife being thus held closely against 'the ring (53 as in Figs. 11 and 12. Thus the teeth 6% serve to correct the spacing of the threads and insure the laying thereof in precise alinement while the shear co operative therewith cuts oil the ends close to the edge of the paper. The present apparatus is designed for cooperation with paper webs of different widths with a minimum of readjustment and for this purpose the rolls 21, 22 are of a length corresponding to the maximum width o1 the paper that it may be required to handle. The rolls 11 and 12 are selected according to the width of the paper web in hand and it will be noted that the outer one of the arms 13 has its pivot l i mounted'on the adjustable plate 59 so that the mounting of the roll may thus be adjusted as to width by changing the position of the plate 59. Thus as seen in dotted lines in Fig. 1 the plate 59 may be adjusted outward so that the sprocket wheel 57 will occupy the dotted line position 5?", the chain 50 being of course correspondingly lengthened with additional thread gripping jaws. In such setting for wider paper the plate {ll adjusted outward on the ways 45 until the sprocket wheel 18 occupies the position -18. The shaft 4-2 has its outer end joru'naled in a bearing block 6? and since this shaft partakes of the described adjustment the bearing block 67 is adjustably mounted on ways 68 of the frame. It is to be noted that not only is the machine thus quickly adaptable to handle different widths of paper but the spacing of the threads may be quickly and conveniently varied by either substituting for the sprocket chains 3550, other chains having differently spaced guides and grippers, or by using only selective ones of the series oi guides and grippers on said chains, 6. 9., using only alternate ones thereof and leaving the others blank. Since with the present construction the transverse filaments are applied one by one to the paper directly at, or closely adj acent the receiving mouth between the rolls 11, 12 it is practicable to vary the spacing of these threads by varying the rate of movement of the thread laying means with respect to the rate of paper feed. Thus it will be noted that as shown the paper feed is driven from a source independent of the thread.laying mechanism and for spacing the threads farther apart it is only necessary to retard the rate of movement of the thread laying chains with respect to the rate of paper movement, while by driving the thread laying chains faster than the paper moves the threads will be laid correspondingly closer together,i. c., closer together than the spacing of the thread gripping jaws themselves.

The present apparatus is adapted to apply either coarse or fine textile threads or wires or other reinforcing filaments and it is also adapted to handle rough papers including craped papers as well as more smooth surfaced kinds. 1 am aware that the invention may be embodied in other specific forms without departing from the spirit or essen tial attributes thereof, and I therefore desire the present embodiment to be considered in all respects as illustrative and not restrictive, reference being had to the appended claims rather than to the foregoing description to indicate the scope of the invention.

lrlaving described my invention, what i claim as new and desire to secure by Letters Patent is:

i. ripparatus of the kind described, conn prising paper feeding and pressing means, and thread laying means cooperative therewith consisting in an endless cevice equipped with thread guides and movable to advance the threads to the paper, and a second endless device equipped with thread gripping jaws and mounted for movement to draw the thread across the course of the paper and also to advance the same toward the paper.

2. Apparatus of the kind described, comprising a pair of presser rolls adapted to receive between them a paper sheet, a thread laying chain equipped with thread guides and movable to advance the threads into the month between said rolls, and a second thread laying chain equipped with thread gippers and extending diagonally with respect to said rolls and the first named chain, the grippers on said second chain adapted to draw the threads into alinement with said rolls and also to advance the threads into the month between said rolls.

3. Apparatus of the kind described. comprising a pair of transfer rolls adapted to receive between them a paper sheet, an endless thread laying-g; device equipped with thread guides extending adjacent one end of said rolls and in parallelism with the path oi the paper sheet, and a second, diagonally disposed endless thread laying device equipped with grippers and arranged to draw the threads through the first mentioned thread laying device and across the course of the paper sheet.

l. Apparatus of the kind described, comprising a pair oi. transfer rolls adapted to receive between them a paper sheet, an endless thread laying device equipped with thread guides extending adjacent one end of said rolls and in parallelism with the path or" the paper sheet, a second endless thread laying device equipped with grippers and arranged to draw the threads through the first mentioned thread laying device and across the course of the paper sheet, said two thread laying devices having a cooperative arrangement and mounting to deliver the threads directly into the month between said rolls.

5. Apparatus of the kind described, comprising paper feeding and pressing means, and thread laying means cooperative therewith consisting in an endless device equipped with thread guides extending in parallelism with the edge of the paper sheet at one side thereof, and a second endless device equipped with thread gripping aws having a path of movement at one point closely approaching the first named thread laying device, and extending thence diagonally away therefrom and toward said paper feeding and pressing means, and adapted to draw the threads across the course of the paper and apply the same thereto. K

6. Apparatus of the kind described, comprising paper feeding and pressing means, thread laying means cooperative therewith consisting in an endless device equipped with thread guides and movable to advance the threads to the paper, a uni-directional carrier for thread spools mounted and connected for movement in unison. with said device, and an endless chain equipped with grippers mounted relatively close to said thread laying device at one point and extending thence diagonally away therefrom to a point at the opposite side of the paper sheet and closely adjacent said pressing means for delivering the threads directly to said pressing means.

7. Apparatus of the kind described, comprising a pair of free moving presser rolls adapted to receive between them a paper sheet and having an adjustable mounting at one end thereof, a pair or" feed rolls arranged to draw the paper through said presser rolls, and thread laying means constructed and arranged to lay transverse threads in a taut condition directly into the month between said rolls, said thread laying means having a mounting adjustable with said roll mount ing to permit setting for paper sheets of different widths.

8. Apparatus of the kind described, comprising a pair of free moving presser rolls adapted to receive between them a paper sheet and having an adjustable mounting at one end thereof, a pair of feed rolls arranged to draw the paper through said presser rolls, and thread laying means constructed and arranged to lay transverse threads in a taut condition and individually directly into the mouth between said rolls, said thread laying means having a mounting adjustable with said roll mounting to permit setting for paper sheets of different widths.

9. Apparatus of the kind described, com.- prising a pair of presser rolls adapted to receive between them a paper sheet, thread laying means cooperative with said rolls and adapted to lay threads upon paper directly in the mouth between said rolls, and thread spacing means carried by one of said rolls consisting in a plate equipped with a series of pointed teeth spaced apart according to the desired spacing of the threads.

10. Apparatus oi the kind described, comprising a pair of presser rolls adapted to receive between them a paper sheet, thread laying means cooperative with sai rolls and adapted to lay threads upon paper directly in the mouth between said rolls, and thread spacing means carried by one of said rolls consisting in a plate equipped with a series oi pointed teeth spaced apart according to the desired spacing of the threads, said spacing means constituting also a movable 

